Merge tag 'trace-v5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...

[linux-2.6-microblaze.git] / include / linux / statfs.h

diff --git a/include/linux/statfs.h b/include/linux/statfs.h
index 20f695b..02c8626 100644 (file)
--- a/include/linux/statfs.h
+++ b/include/linux/statfs.h
@@ -4,6 +4,7 @@
 
 #include <linux/types.h>
 #include <asm/statfs.h>
+#include <asm/byteorder.h>
 
 struct kstatfs {
        long f_type;
@@ -50,4 +51,11 @@ static inline __kernel_fsid_t u64_to_fsid(u64 v)
        return (__kernel_fsid_t){.val = {(u32)v, (u32)(v>>32)}};
 }
 
+/* Fold 16 bytes uuid to 64 bit fsid */
+static inline __kernel_fsid_t uuid_to_fsid(__u8 *uuid)
+{
+       return u64_to_fsid(le64_to_cpup((void *)uuid) ^
+               le64_to_cpup((void *)(uuid + sizeof(u64))));
+}
+
 #endif